CN215329805U - Measuring device for soil body pressure and pore water pressure - Google Patents
Measuring device for soil body pressure and pore water pressure Download PDFInfo
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- CN215329805U CN215329805U CN202121497866.XU CN202121497866U CN215329805U CN 215329805 U CN215329805 U CN 215329805U CN 202121497866 U CN202121497866 U CN 202121497866U CN 215329805 U CN215329805 U CN 215329805U
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Abstract
The utility model relates to a measuring device for soil body pressure and pore water pressure. It comprises a fixed frame and a measuring unit; the fixed frame is provided with a plurality of screws for fixing the measuring unit; the measuring unit comprises two soil pressure boxes and a pore water pressure gauge, wherein the soil pressure boxes are arranged in a horizontal direction, the pressure sensing working surfaces of the soil pressure boxes are arranged in a horizontal direction, the other soil pressure box is arranged at the upper part of the soil pressure box in a vertical direction, and the pore water pressure gauge is arranged at the bottom of the soil pressure box arranged in a horizontal direction; the soil pressure cell and the pore water pressure gauge are respectively fixed with the fixing frame by winding iron wires for fixing and screws. The measuring device provided by the utility model combines the measuring instruments together, can penetrate into the soil body and simultaneously measure the soil pressure and the pore water pressure in the horizontal and vertical directions of the soil body, and effectively improves the measuring efficiency; each instrument is firm in connection, construction quality is guaranteed, and cost is saved.
Description
Technical Field
The utility model relates to a measuring device for soil pressure and pore water pressure of a soil body, and belongs to the technical field of geotechnical engineering testing.
Background
In large-scale underground engineering construction, the interaction between a structure and a soil layer, the soil layer osmotic pressure and the like are of great importance for analyzing and evaluating the safety and the rationality of the structure.
In the field of geotechnical engineering field monitoring, in order to measure the internal stress and osmotic pressure of a soil layer, soil pressure in different directions is generally measured by utilizing soil pressure cells, and the direction aligned with the front side of the embedded soil pressure cell is the soil pressure value in the target measuring direction; osmotic pressure was measured using a pore water pressure gauge. At present, the conventional methods for burying the soil pressure box include a layered burying method and a drilling installation method. The layered burying method has wide application, namely, the soil pressure box is buried in a layered mode in the backfilling process, but the defects that the soil pressure of the finished complete soil body cannot be measured and the depth cannot be measured exist; the drilling method is suitable for measuring the soil pressure of a complete soil body, the survey drill drills a hole in the ground surface to the depth required to be measured, the soil pressure box is buried and then fine sand is backfilled, the soil pressure of different depths is measured, the soil pressure value of any depth can be measured by the drilling method, the direction of the soil pressure box is easy to change when the soil pressure box is buried, the measuring direction of the soil pressure box is difficult to fix when the measurement is carried out, the pressure in different directions needs to be measured, the measurement is often required for multiple times, the burying is carried out for multiple times, the operation is inconvenient, and the time and the energy are wasted.
Disclosure of Invention
The utility model provides a combined soil pressure and pore water pressure measuring device which has high measuring efficiency, controllable measuring direction, low cost and easy operation, and aims to overcome the defects of the existing soil pressure box buried by a drilling method.
The technical scheme for realizing the aim of the utility model is to provide a measuring device for soil pressure and pore water pressure, which comprises a fixing frame and a measuring unit; the fixed frame is provided with a plurality of screws for fixing the measuring unit; the measuring unit comprises two soil pressure boxes and a pore water pressure gauge, wherein the soil pressure boxes are arranged in a horizontal direction, the pressure sensing working surfaces of the soil pressure boxes are arranged horizontally, the other soil pressure box is arranged in a vertical direction, the pressure sensing working surfaces of the soil pressure boxes are arranged on the upper parts of the soil pressure boxes arranged in the horizontal direction, the pore water pressure gauge is arranged at the bottom of the soil pressure boxes arranged in the horizontal direction; the soil pressure cell and the pore water pressure gauge in the measuring unit are respectively fixed with the fixing frame by winding iron wires for fixing and screws.
In the technical scheme of the utility model, the fixing frame is a pair of angle steels arranged in parallel, and connecting holes are arranged at two ends of each angle steel; a height scale is arranged on the fixed frame; the fixing frame can be provided with 1-3 measuring units.
The utility model provides a device for measuring soil pressure and pore water pressure, wherein the lateral direction of a soil pressure box arranged horizontally is fixed with a fixing frame through a hoop.
The measuring device for the soil pressure and the pore water pressure can be used for sequentially and rigidly connecting the fixing frames to form a plurality of measuring devices for the soil pressure and the pore water pressure.
Compared with the prior art, the utility model has the beneficial effects that:
1. the device that will measure soil pressure and water pressure passes through the mount combination and is in the same place, can go deep into the soil body and monitor, measures soil body level, the soil pressure and the pore water pressure of vertical direction simultaneously, has effectively improved measurement of efficiency.
2. The measuring instrument is firm in connection, the fixing of the measuring direction is guaranteed in the embedding process, the construction quality is guaranteed, the cost is saved, and the operation is easy.
Drawings
Fig. 1 is a schematic structural diagram of a device for measuring soil pressure and pore water pressure according to an embodiment of the present invention;
fig. 2 is a schematic view of a fixing structure of a soil pressure cell horizontally arranged in a measuring device according to an embodiment of the present invention;
in the figure: 1. a fixed mount; 2. a pore water pressure gauge; 3. a soil pressure cell arranged horizontally; 4. fixing an iron wire; 5. a screw; 6. hooping; 7. the soil pressure cell sets up to vertical.
Detailed Description
The technical scheme of the utility model is further explained by combining the drawings and the embodiment.
Example 1
Referring to fig. 1, it is a schematic structural diagram of a device for measuring soil pressure and pore water pressure according to this embodiment; the fixed frame 1 is used for fixing a measuring unit formed by a measuring instrument and placing the measuring unit into a drill hole, in the embodiment, the fixed frame is a pair of angle steels arranged in parallel, and the measuring unit comprises two soil pressure boxes with pressure sensing working surfaces vertical to each other and a pore water pressure gauge; the pressure sensing working surface of the soil pressure box 3 which is arranged horizontally, namely is vertical to the angle steel of the fixing frame and is used for measuring the soil pressure in the vertical direction; the pressure sensing working surface of the soil pressure box 7 which is arranged vertically, namely is parallel to the angle steel of the fixed frame, and is used for measuring the soil pressure in the horizontal direction (lateral direction); the angle steel is provided with a plurality of screws 5 for fixing the measuring instrument, and the soil pressure cell 3 arranged horizontally, the soil pressure cell 7 arranged vertically and the pore water pressure gauge 2 are fixed with the angle steel respectively by winding the iron wire 4 for fixing. The pore water pressure gauge 2 is arranged at the bottom of the soil pressure box 3 which is horizontally arranged, so that the soil pressure box can be further fixed in the vertical direction; the soil pressure cells 7 arranged in the vertical direction are arranged at the upper parts of the soil pressure cells 3 arranged in the horizontal direction, and the pressure sensing working faces of the two soil pressure cells are vertical to each other and are respectively used for measuring the soil pressure in the vertical direction and the soil pressure in the horizontal direction.
Referring to fig. 2, it is a schematic view of a fixing structure of a soil pressure cell horizontally arranged in the measuring device provided in this embodiment; the soil pressure cell 3 that the level set up to through the winding of fixed iron wire 4, with be fixed in the screw 5 on the mount 1, adopt staple bolt 6 to carry out the further fixed of side direction again.
According to the measuring device for the soil pressure and the pore water pressure, 1-3 measuring units consisting of two soil pressure boxes with mutually vertical pressure sensing working surfaces and a pore water pressure meter can be respectively arranged on a fixed frame according to the monitoring point requirement of a soil body to be measured; connecting pieces can be arranged at two ends of the fixing frame, if the connecting pieces are hard connected through screws and nuts after drilling holes in the angle steel, the fixing frame is sequentially and rigidly connected according to the monitoring point requirements of the soil body to be detected, a plurality of groups of soil pressure and pore water pressure measuring devices are arranged, the soil pressure and the pore water pressure in the horizontal direction and the vertical direction of the soil body of each monitoring point are simultaneously completed, and the measuring efficiency is improved.
The measuring device provided by the utility model can also be provided with the height scale on the fixed frame, so that the measuring instrument can be accurately installed on the fixed frame according to the depth requirement of the monitoring point, and the measuring device is convenient to install and use.
The construction method of the measuring device provided by the utility model comprises the following steps:
1. and selecting a proper monitoring point on the surface of the soil body to be detected, selecting a proper drill bit to drill to a target depth, wherein the diameter of a drilled hole is required to meet the requirement that the device smoothly enters the drilled hole, and reserving a certain space for backfilling standard sand.
2. According to the depth of soil pressure and pore water pressure of soil to be measured, according to the measuring device provided by the embodiment, measuring units consisting of soil pressure boxes and pore water pressure meters are respectively installed at corresponding height positions of the fixing frame, or a plurality of groups of measuring devices are connected in a hard mode.
3. And (3) placing the measuring device provided in the step (2) into a drilled hole, connecting the output lines of the soil pressure box and the pore water pressure meter with the input end of the reading instrument, and backfilling standard sand.
Claims (6)
1. The utility model provides a measuring device of soil body pressure and pore water pressure which characterized in that: it comprises a fixed frame (1) and a measuring unit; the fixed frame is provided with a plurality of screws (5) for fixing the measuring unit; the measuring unit comprises two soil pressure boxes and a pore water pressure gauge, wherein the soil pressure boxes and the pore water pressure gauge are arranged on the pressure sensing working surfaces of the two soil pressure boxes in mutually perpendicular mode, the pressure sensing working surface of one soil pressure box (3) arranged in the horizontal direction is arranged in the horizontal direction, the other soil pressure box (7) arranged in the vertical direction is arranged at the upper part of the soil pressure box (3) arranged in the horizontal direction, the pressure sensing working surface of the other soil pressure box is arranged in the vertical direction, and the pore water pressure gauge (2) is arranged at the bottom of the soil pressure box (3) arranged in the horizontal direction; the soil pressure cell and the pore water pressure gauge in the measuring unit are respectively fixed with the fixing frame by winding an iron wire (4) for fixing and a screw (5).
2. The apparatus of claim 1, wherein the apparatus comprises: the fixing frame is a pair of parallel angle steels, and connecting holes are formed in two ends of each angle steel.
3. The apparatus of claim 1, wherein the apparatus comprises: the fixed frame is provided with a height scale.
4. The apparatus of claim 1, wherein the apparatus comprises: the fixed frame is provided with 1-3 measuring units.
5. The apparatus of claim 1, wherein the apparatus comprises: the lateral direction of the soil pressure cell (3) which is horizontally arranged is fixed with the fixed mount through the hoop (6).
6. The apparatus of claim 1, wherein the apparatus comprises: the fixing frames are sequentially and rigidly connected to form a plurality of soil pressure and pore water pressure measuring devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121497866.XU CN215329805U (en) | 2021-07-02 | 2021-07-02 | Measuring device for soil body pressure and pore water pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121497866.XU CN215329805U (en) | 2021-07-02 | 2021-07-02 | Measuring device for soil body pressure and pore water pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215329805U true CN215329805U (en) | 2021-12-28 |
Family
ID=79564263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121497866.XU Active CN215329805U (en) | 2021-07-02 | 2021-07-02 | Measuring device for soil body pressure and pore water pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215329805U (en) |
-
2021
- 2021-07-02 CN CN202121497866.XU patent/CN215329805U/en active Active
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